2638974377 has 24 divisors (see below), whose sum is σ = 2928796416. Its totient is φ = 2375657856.

The previous prime is 2638974343. The next prime is 2638974407. The reversal of 2638974377 is 7734798362.

It is not a de Polignac number, because 2638974377 - 2¹⁰ = 2638973353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2638974577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3629588 + ... + 3630314.

It is an arithmetic number, because the mean of its divisors is an integer number (122033184).

Almost surely, 2^2638974377 is an apocalyptic number.

It is an amenable number.

2638974377 is a deficient number, since it is larger than the sum of its proper divisors (289822039).

2638974377 is a wasteful number, since it uses less digits than its factorization.

2638974377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257 (or 1244 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 56.

The square root of 2638974377 is about 51370.9487648418. The cubic root of 2638974377 is about 1381.9056458250.

The spelling of 2638974377 in words is "two billion, six hundred thirty-eight million, nine hundred seventy-four thousand, three hundred seventy-seven".